You don’t need a loss to teach you what you had. You can practice noticing it on a regular weekday.

Most people learn the value of things by subtraction, after the fact, when it is too late to enjoy the knowing. That is not the only route available. You can look at something while you still have it and ask what it would be like to not have it, which produces the same recognition without the cost. It takes about ten seconds and feels strange at first.

Try it on something ordinary this week: a person at your dinner table, a walk you take daily, a friendship you assume will always be there.